panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *500991 8594 0 0x1000 0x4080000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d8fa0) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c0cae20,400000000000,400000001000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806c0cae20,400000000000,400000001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80003c9c30a8,1,400000000100,ffff80003c9c30d8,0,11d31d7f40677b25,1) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c9c30a4,2,400000000100,ffff80003c9c30d8,0,27,91699d590229f81a) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002d90d218,ffff80003c9c3210,ffff80003c9c3160) at sys_sysctl+0x425 syscall(ffff80003c9c3210) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68e20647a10, count: 6 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault_unwire_locked: address not in map ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d8fa0) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c0cae20,400000000000,400000001000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806c0cae20,400000000000,400000001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80003c9c30a8,1,400000000100,ffff80003c9c30d8,0,11d31d7f40677b25,1) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c9c30a4,2,400000000100,ffff80003c9c30d8,0,27,91699d590229f81a) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002d90d218,ffff80003c9c3210,ffff80003c9c3160) at sys_sysctl+0x425 syscall(ffff80003c9c3210) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68e20647a10, count: -9 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c9c2cb0 rbx 0xe rdx 0xffff80000145ab00 rcx 0 rax 0xffff80002d90d218 r8 0x101010101010101 r9 0x8080808080808080 r10 0x73c5c1da0c5701f3 r11 0xc5aab6fa30d7c971 r12 0 r13 0x7f7fffffc000 r14 0 r15 0x1 rip 0xffffffff82131625 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c9c2ca0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=500991 pid=8594 tcnt=2 stat=onproc flags process=1000 proc=4080000 runpri=32, usrpri=80, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003a94bc50 scnt=1 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003a94bc50,0xffff80002d90c2c8 process=0xffff8000ffff9a28 user=0xffff80003c9be000, vmspace=0xfffffd806c0cae20 estcpu=30, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 43882 97315 55281 0 2 0 syz-executor 43882 397793 55281 0 3 0x4000080 sysctllk syz-executor 33048 329480 97208 0 3 0x80 nanoslp syz-executor 33048 165108 97208 0 3 0x4000080 sysctllk syz-executor 14307 217413 65004 0 3 0x80 nanoslp syz-executor 14307 476836 65004 0 3 0x4000080 sysctllk syz-executor 14307 108905 65004 0 3 0x4000080 fsleep syz-executor 84505 368434 98863 0 3 0x80 nanoslp syz-executor 84505 440699 98863 0 3 0x4000080 fifow syz-executor 84505 109567 98863 0 3 0x4000080 fsleep syz-executor 25901 197907 9221 0 3 0x82 sysctllk syz-executor 98193 393186 74431 0 3 0x80 nanoslp syz-executor 98193 394420 74431 0 3 0x4000080 sysctllk syz-executor 8067 304620 73476 0 3 0x80 nanoslp syz-executor 8067 191539 73476 0 3 0x4000080 sysctllk syz-executor 8067 124245 73476 0 3 0x4000080 sysctllk syz-executor 8067 508597 73476 0 3 0x4000080 fsleep syz-executor 8594 74611 25657 0 3 0x3000 suspend syz-executor * 8594 500991 25657 0 7 0x4081000 syz-executor 74431 227050 9221 0 3 0x82 nanoslp syz-executor 57949 423981 0 0 3 0x14200 acct acct 49344 105218 0 0 3 0x14200 bored sosplice 65004 180363 9221 0 3 0x82 nanoslp syz-executor 25657 269945 9221 0 3 0x82 nanoslp syz-executor 55281 111076 9221 0 3 0x82 nanoslp syz-executor 97208 233822 9221 0 3 0x82 nanoslp syz-executor 98863 207971 9221 0 3 0x82 nanoslp syz-executor 73476 455273 9221 0 3 0x82 nanoslp syz-executor 9221 340420 37116 0 3 0x82 kqread syz-executor 37116 498421 6575 0 3 0x10008a sigsusp ksh 6575 440059 85213 0 3 0x98 kqread sshd-session 85213 521597 5755 0 3 0x92 kqread sshd-session 60985 199410 1 0 3 0x100083 ttyin getty 5755 363083 1 0 3 0x88 kqread sshd 94436 11775 90557 73 3 0x1100090 kqread syslogd 90557 394168 1 0 3 0x100082 sbwait syslogd 88913 164987 1 0 3 0x100080 kqread resolvd 51581 490866 44371 77 3 0x100092 kqread dhcpleased 54797 189337 44371 77 3 0x100092 kqread dhcpleased 44371 432404 1 0 3 0x80 kqread dhcpleased 65738 45421 0 0 3 0x14200 bored smr 54947 181762 0 0 2 0x14200 zerothread 48626 269161 0 0 3 0x14200 aiodoned aiodoned 75125 267164 0 0 3 0x14200 syncer update 61324 444734 0 0 3 0x14200 cleaner cleaner 35321 320640 0 0 3 0x14200 reaper reaper 58269 227817 0 0 3 0x14200 pgdaemon pagedaemon 95587 517167 0 0 3 0x14200 bored viomb 30886 292071 0 0 3 0x40014200 acpi0 acpi0 23570 147936 0 0 3 0x14200 bored softnet3 35835 413457 0 0 3 0x14200 bored softnet2 22660 512360 0 0 3 0x14200 bored softnet1 42043 59016 0 0 3 0x14200 bored softnet0 28773 53950 0 0 3 0x14200 bored systqmp 74395 113981 0 0 3 0x14200 bored systq 82294 269235 0 0 3 0x40014200 tmoslp softclock 8700 506239 0 0 3 0x40014200 idle0 1 226996 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 11116K 11439K 166960K 11883 0 pcb 18 13K 14K 166960K 116 0 rtable 225 8K 8K 166960K 434 0 pf 29 12K 14K 166960K 65 0 ifaddr 38 6K 7K 166960K 67 0 ifgroup 46 2K 2K 166960K 95 0 sysctl 2 1K 1K 166960K 2 0 counters 29 17K 17K 166960K 49 0 ioctlops 0 0K 4K 166960K 67 0 iov 0 0K 16K 166960K 22 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1434 90K 90K 166960K 1700 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 17 0 dirhash 12 2K 3K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 58K 97K 166960K 488 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 124K 166960K 542 0 subproc 63 3K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 60 0 in_multi 84 6K 7K 166960K 129 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 432 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 226 65K 88K 166960K 5795 0 UVM aobj 11 2K 2K 166960K 12 0 pinsyscall 38 76K 96K 166960K 1548 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 22 0 NDP 10 0K 2K 166960K 42 0 temp 44 8676K 8742K 166960K 27265 0 kqueue 13 20K 32K 166960K 77 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 69 0 66 1 0 1 1 0 8 0 rtentry 128 136 0 34 4 0 4 4 0 8 0 unpcb 144 271 0 250 4 0 4 4 0 8 3 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 808 80 0 73 1 0 1 1 0 8 0 arp 88 21 0 4 1 0 1 1 0 8 0 ipq 40 4 0 0 1 0 1 1 0 8 0 ipqe 40 7 0 0 1 0 1 1 0 8 0 inpcb 344 528 0 514 6 1 5 5 0 8 3 nd6 104 30 0 9 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 9 0 2 1 0 1 1 0 8 0 ppxss 1072 11 0 11 2 1 1 1 0 8 1 pppxif 1384 5 0 5 1 0 1 1 0 8 1 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 6 0 2 1 0 1 1 0 8 0 pfstate 344 3 0 1 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 566 0 146 28 0 28 28 0 8 1 art_table 32 568 0 146 4 0 4 4 0 8 0 art_node 16 134 0 41 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 4 1 0 1 1 0 8 0 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 9 0 1 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 2155 0 655 95 0 95 95 0 8 0 ffsino 248 2155 0 655 95 0 95 95 0 8 0 nchpl 144 2860 0 2328 63 33 30 63 0 8 8 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 2487 0 0 51 0 51 51 0 8 0 vnodes 216 2487 0 0 139 0 139 139 0 8 0 namei 1024 9668 0 9668 2 1 1 2 0 8 1 kstatmem 264 46 0 26 2 0 2 2 0 8 0 scxspl 216 8857 0 8857 9 1 8 8 1 8 8 plimitpl 152 206 0 189 1 0 1 1 0 8 0 sigapl 424 768 0 721 7 1 6 7 0 8 0 futexpl 64 5744 0 5741 1 0 1 1 0 8 0 knotepl 120 295389 0 295342 15 4 11 15 0 8 7 kqueuepl 184 231 0 222 4 0 4 4 0 8 3 pipepl 296 263 0 236 8 0 8 8 0 8 5 fdescpl 440 750 0 721 5 1 4 5 0 8 0 filepl 120 4401 0 4188 12 0 12 12 0 8 4 lockfpl 104 97 0 94 1 0 1 1 0 8 0 lockfspl 48 41 0 38 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 690 0 679 1 0 1 1 0 8 0 zombiepl 144 722 0 721 2 1 1 1 0 8 0 processpl 1112 768 0 721 4 0 4 4 0 8 0 procpl 656 1298 0 1240 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 528 878 0 840 7 0 7 7 0 8 4 mcl64k 65536 8 0 8 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 77 0 77 2 1 1 1 0 8 1 mcl4k 4096 2859 0 2803 15 6 9 14 0 8 1 mcl2k 2048 684 0 676 4 1 3 3 0 8 2 mtagpl 96 51 0 6 3 1 2 2 0 8 0 mbufpl 256 8252 0 7848 30 1 29 29 0 8 0 bufpl 280 2831 0 127 194 0 194 194 0 8 0 anonpl 24 121114 0 112812 77 1 76 76 0 187 11 amapchunkpl 152 18943 0 18375 36 0 36 36 0 158 13 amappl16 200 2307 0 2032 29 2 27 27 0 8 5 amappl15 192 69 0 69 1 1 0 1 0 8 0 amappl14 184 105 0 95 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1374 0 1346 3 1 2 3 0 8 0 amappl11 160 44 0 33 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 281 0 281 1 1 0 1 0 8 0 amappl8 136 17 0 15 1 0 1 1 0 8 0 amappl7 128 97 0 87 1 0 1 1 0 8 0 amappl6 120 178 0 174 1 0 1 1 0 8 0 amappl5 112 115 0 109 1 0 1 1 0 8 0 amappl4 104 297 0 282 1 0 1 1 0 8 0 amappl3 96 3479 0 3366 4 0 4 4 0 8 0 amappl2 88 638 0 583 2 0 2 2 0 8 0 amappl1 80 8553 0 8029 14 2 12 14 0 8 1 amappl 88 5410 0 5233 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 11 0 1 1 0 1 1 0 8 0 uaddrrnd 24 750 0 721 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 750 0 721 1 0 1 1 0 8 0 vmmpekpl 168 7788 0 7746 3 0 3 3 0 8 0 vmmpepl 168 51205 0 49215 102 2 100 100 0 357 10 vmsppl 360 749 0 721 4 1 3 4 0 8 0 rwobjpl 32 18428 0 14825 30 0 30 30 0 8 0 pdppl 4096 1506 0 1442 104 38 66 82 0 8 2 pvpl 32 320828 0 306517 161 2 159 159 0 265 38 pmappl 216 749 0 721 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 292 0 51 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d8fa0) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c0cae20,400000000000,400000001000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806c0cae20,400000000000,400000001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80003c9c30a8,1,400000000100,ffff80003c9c30d8,0,11d31d7f40677b25,1) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c9c30a4,2,400000000100,ffff80003c9c30d8,0,27,91699d590229f81a) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002d90d218,ffff80003c9c3210,ffff80003c9c3160) at sys_sysctl+0x425 syscall(ffff80003c9c3210) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68e20647a10, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d8fa0) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c0cae20,400000000000,400000001000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806c0cae20,400000000000,400000001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80003c9c30a8,1,400000000100,ffff80003c9c30d8,0,11d31d7f40677b25,1) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c9c30a4,2,400000000100,ffff80003c9c30d8,0,27,91699d590229f81a) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002d90d218,ffff80003c9c3210,ffff80003c9c3160) at sys_sysctl+0x425 syscall(ffff80003c9c3210) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68e20647a10, count: -9